u-boot 컴파일,부팅

u-boot 코드 다운로드

$mkdir WORKING_DIRECTORY

$cd WORKING_DIRECTORY

$git init

$git clone https://git.linaro.org/boot/u-boot-linaro-stable.git

cross compile 설치

http://sourcery.mentor.com/public/gnu_toolchain/arm-none-eabi/ 

uboot의 makefile 수정

export CROSS_COMPILE = arm-none-eabi-

export ARCH=arm

u-boot컴파일

$make arndale5250_config

$make

SD card 로 부팅을 위해 코드올리기

$sudo dd if=arndale-bl1.bin of=/dev/sdb bs=512 seek=1

$sudo dd if=spl/smdk5250-spl.bin of=/dev/sdb bs=512 seek=17

$sudo dd if=u-boot.bin of=/dev/sdb bs=512 seek=49

참조 : https://wiki.linaro.org/Boards/Arndale/Setup/EnterpriseUbuntuServer

arndale-bl1.bin

spl, u-boot은 build후 생성되는 파일들.

SD card의 u-boot으로 부팅완료

U-Boot 2013.01.-rc1-00003-g43ee87a-dirty (Jan 15 2015 - 18:31:41) for ARNDALE520

CPU:    Exynos5250@1000MHz

Board:  for ARNDALE5250

I2C:   ready

DRAM:  2 GiB

WARNING: Caches not enabled

Checking Boot Mode ... SDMMC

MMC:   EXYNOS DWMMC: 0, EXYNOS DWMMC: 1, EXYNOS DWMMC: 2

In:    serial

Out:   serial

Err:   serial

Net:   No ethernet found.

(Re)start USB...

USB0:   USB EHCI 1.00

scanning bus 0 for devices... 4 USB Device(s) found

       scanning usb for storage devices... 0 Storage Device(s) found

       scanning usb for ethernet devices... 1 Ethernet Device(s) found